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Number of primitive Pythagorean triangles with hypotenuse n.

+0
6

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 (list; graph; listen)

	OFFSET	`1,65`
	COMMENT	`Consider primitive Pythagorean triangles (A^2 + B^2 = C^2, (A, B) = 1, A <= B); sequence gives number of times C takes value n.`
	REFERENCES	`A. H. Beiler, Recreations in the Theory of Numbers. New York: Dover, pp. 116-117, 1966.`
	LINKS	`Ron Knott, Pythagorean Triples and Online Calculators` `Eric Weisstein's World of Mathematics, Pythagorean Triple`
	CROSSREFS	`Cf. A024361, A046079, A046080, A020882.` `Adjacent sequences: A024359 A024360 A024361 this_sequence A024363 A024364 A024365` `Sequence in context: A073346 A114099 A028613 this_sequence A104488 A010103 A086078`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified July 4 09:27 EDT 2009. Contains 160562 sequences.

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